State Street Global Advisors, the world’s second-biggest exchange-traded fund provider, filed to offer seven indexed bond ETFs spanning the public and private sectors and focused on a number of specific industries in a bid to capture one of the fastest-growing parts of the exchange-traded fund universe.

SSgA’s proposed funds are: the SPDR S&P Agency Bond ETF, the SPDR Barclays Capital Corporate Bond ETF, the SPDR Barclays Capital Corporate Industrial Bond ETF, the SPDR Barclays Capital Corporate Financial Bond ETF, the SPDR Barclays Capital Corporate Utilities Bond ETF, the SPDR Barclays Capital Zero Coupon Bond ETF and the SPDR Barclays Capital CMBS ETF.

The respective ETFs are based on the following indexes: the S&P U.S. Agency Bond Index, the Barclays Capital U.S. Corporate Bond Index, the Barclays Capital U.S. Corporate Industrial Bond Index, the Barclays Capital U.S. Corporate Financial Bond Index, the Barclays Capital U.S. Corporate Utilities Bond Index, the Barclays Capital U.S. Treasury STRIPS Index and the Barclays Capital CMBS ERISA-Eligible Index.

Filings and launchings of bond ETFs have been numerous recently amid growing concern among fixed-income investors to find securities that perform relatively well when interest rates are rising. Bond prices lose value when rates rise. The Federal Reserve lowered official rates to almost zero because of the economic crisis, but is likely to raise rates as business activity picks up to control inflation.

Normally all, but at least 80 percent of each of the funds will be invested in securities included in each respective benchmark or in securities the adviser deems to be equivalent. The company didn't disclose management fees or trading symbols for the funds. All will trade on NYSE Arca, the March 12 filing said.